Wide open, f/2.8 at 24mm I expect a lens this expensive to have abolutly no vignetting.

But then after a bit I get over it. Dylan777 is correct it does have vignetting. As he said as long as it is equal you should be ok.

I don't know if you get over it...but you learn to live with it BECAUSE the lens is SO sharp and REALLY has great fit & finish. Feels incredible in the hands, (and I cannot believe that I am saying that about a zoom). I never felt that way about my 24-105.

The vignetting and a few other reasons help answer the question, can I replace my 24mm or 35mm L's with this lens.

Is you need super-low DOF in your wides, no. I was torn...but ended up going for the versatile zoom instead of buying the Sigma 35mm and the Canon 24mm L, (same money being spent). Definitely a TOUGH choice.

Well yes my need may be a super-low DOF in my wides. Not what I was referring to though.But, there are other things to. Such as distortion.

ah...you are correct...there are issues there as well. Just was not that important to me..If you look at my lens quiver, I have a lot of good glass...and I just had to make a decision for me...do I always want to be carrying and switching prime lenses out. I decided that sometimes I want to grab my camera, (I got a small holster bag just for this lens on the camera), run out the door, be light footed, have versatility and know that I can come back with the "good" goods. The 5DIII and the new 24-70mm do allow me to truly do that, with (for me), very mild compromises. (when I need shallow DOF I am going to my 50mm Sigma or my Canon 85mm L, anyway).I think that became my priority, and it ads versatility to my kit, for me. I want it all and just don't have the money or a packmule who can hold reflectors for me either!!!!My next purchase will definitely be the Zeiss 15mm, f/2.8 ZE. I am gaining strength were I can. We all have to find our way as to what is important to our photographic journey. Everyone should have a good ride!!!!!

Wide open, f/2.8 at 24mm I expect a lens this expensive to have abolutly no vignetting.

The 600mm f/4L IS II costs $13,000 and has about 1.5 stops of vignetting wide open.

The 24L II is $1500 and it has 3 stops of vignette. O_o

This is typical of a board with "Rumors" in its name.We start by talking about the 24-70mm f/2.8 L II shot at 24mm, jump to the 600mm II and then it somehow turns in to the 24mm f/1.4L II

The New Rumored 24-70 2.8L III will have Zero vignette at all focal lengths and perfect IQ. It will weight in at a reasonable 500 Grams and a MSRP of 1299$ including canons all new 7th generation Image Stablizer providing 8-stops of compensation.

Wide open, f/2.8 at 24mm I expect a lens this expensive to have abolutly no vignetting.

The 600mm f/4L IS II costs $13,000 and has about 1.5 stops of vignetting wide open.

The 24L II is $1500 and it has 3 stops of vignette. O_o

This is typical of a board with "Rumors" in its name.We start by talking about the 24-70mm f/2.8 L II shot at 24mm, jump to the 600mm II and then it somehow turns in to the 24mm f/1.4L II

The New Rumored 24-70 2.8L III will have Zero vignette at all focal lengths and perfect IQ. It will weight in at a reasonable 500 Grams and a MSRP of 1299$ including canons all new 7th generation Image Stablizer providing 8-stops of compensation.

Wide open, f/2.8 at 24mm I expect a lens this expensive to have abolutly no vignetting.

The 600mm f/4L IS II costs $13,000 and has about 1.5 stops of vignetting wide open.

The 24L II is $1500 and it has 3 stops of vignette. O_o

This is typical of a board with "Rumors" in its name.We start by talking about the 24-70mm f/2.8 L II shot at 24mm, jump to the 600mm II and then it somehow turns in to the 24mm f/1.4L II

The New Rumored 24-70 2.8L III will have Zero vignette at all focal lengths and perfect IQ. It will weight in at a reasonable 500 Grams and a MSRP of 1299$ including canons all new 7th generation Image Stablizer providing 8-stops of compensation.

Zlatko

I am one that is not bothered by vignetting at all though, in fact, I enjoy it. You can always easily correct it in Lightroom with the lens profile if need be.

I like it too. The vignetting is of course to be expected. This lens has a lot of strengths, including its delightful size. I imagine that to build such a lens without any vignetting, it would have to be much larger (to draw a bigger image circle), heavier and costlier.

And of course it has that built-in anti-vignetting feature: stopping down the aperture.

Wide open, f/2.8 at 24mm I expect a lens this expensive to have abolutly no vignetting.

But then after a bit I get over it. Dylan777 is correct it does have vignetting. As he said as long as it is equal you should be ok.

I don't know if you get over it...but you learn to live with it BECAUSE the lens is SO sharp and REALLY has great fit & finish. Feels incredible in the hands, (and I cannot believe that I am saying that about a zoom). I never felt that way about my 24-105.

Absolutely right. This lens is very sharp even wide open. Vignetting can easily be corrected in LR anyway....

"Bad" is only bad if it shows after postprocessing (for jpeg correction is built-in), i.e. when raising the outer areas and then underexposure on top of that so that the shadow resolution drops and noise rises.

So 2ev should be still ok and is not much in comparison to other wide angle lenses like more than 3ev on the 35L.

Wide open, f/2.8 at 24mm I expect a lens this expensive to have abolutly no vignetting.

The 600mm f/4L IS II costs $13,000 and has about 1.5 stops of vignetting wide open.

The 24L II is $1500 and it has 3 stops of vignette. O_o

This is typical of a board with "Rumors" in its name.We start by talking about the 24-70mm f/2.8 L II shot at 24mm, jump to the 600mm II and then it somehow turns in to the 24mm f/1.4L II

The New Rumored 24-70 2.8L III will have Zero vignette at all focal lengths and perfect IQ. It will weight in at a reasonable 500 Grams and a MSRP of 1299$ including canons all new 7th generation Image Stablizer providing 8-stops of compensation.

This could be a "rumor" right?

Might beCan I pre-order now?

Sure, If you've got a spare billion dollars for the R&D.

No, no, no, NOOOO this will be 24-70 2.8L IV not III. You are too optimistic